Flora of North America species comparison

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Astragalus sect. Mollissimi
Habit Herbs perennial, tuft- or clump-forming, acaulescent or caulescent; caudex superficial.
Stems

obsolete, single, or few to several.
Leaves

odd-pinnate, petiolate;

leaflets (9 or)11–35.
Racemes

initially densely flowered, flowers spreading or ascending.
Corollas

purple, pinkish, pink-purple, yellowish suffused with lilac, or ochroleucous, banner recurved through 30°, keel apex round or triangular.
Calyx

tubes cylindric or deeply campanulate.
Legumes

deciduous, sessile, spreading or ascending, (usually humistrate), obliquely ovoid, lanceoloid-ellipsoid, or linear-oblong, straight or incurved, terete to obcompressed, bilocular.
Seeds

12–38[–41].
Pubescence

copious and commonly villous-tomentose, with shorter, usually curly, and longer spirally twisted hairs, usually turning rusty brown on drying.
Hairs

basifixed.
Stipules

distinct.

Astragalus sect. Mollissimi
Distribution
c United States; sw United States; n Mexico
Discussion

Species 3 (2 in the flora).

Section Mollissimi consists of three monospecific subsections: subsect. Mollissimi (A. Gray Barneby (Astragalus mollissimus); subsect. Nutriosenses S. L. Welsh (A. nutriosensis); and subsect. Orthanthi Barneby (A. helleri Fenzl). The last occurs only in Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Astragalus
Subordinate taxa
Name authority A. Gray: Proc. Amer. Acad. Arts 6: 195. (1864)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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